national capital vs capital of Togo

national capital and capital of Togo both are nouns.

Word	Noun	Adjective	Verb	Adverb
national capital	Yes	No	No	No
capital of Togo	Yes	No	No	No

national capital (noun)	capital of Togo (noun)
the capital city of a nation	capital and largest city of Togo; located in the south on the Gulf of Guinea